Fire clay is a term applied to a range of refractory clays used in the manufacture of ceramics, especially fire brick. The United States Environmental Protection Agency defines fire clay very generally as a "mineral aggregate composed of hydrous silicates of aluminium (Al2O3.2SiO2.2H2O) with or without free silica."
Read more about Fire Clay: Properties, Chemical Composition, Extraction
Famous quotes containing the words fire and/or clay:
“‘Tis the Last Judgment’s fire must cure this place,”
—Robert Browning (1812–1889)
“When Nature was shaping him, clay was not granted
For making so full-sized a man as she wanted,
So, to fill out her model, a little she spared
From some finer-grained stuff for a woman prepared,
And she could not have hit a more excellent plan
For making him fully and perfectly man.”
—James Russell Lowell (1819–1891)